Button("Save") { save() }
    .frame(minWidth: 44, minHeight: 44)

// 20pt icon with no padding — too small to tap reliably
Button(action: save) {
    Image(systemName: "checkmark")
        .font(.system(size: 20))
}
// Missing .frame(minWidth: 44, minHeight: 44)

struct ContentView: View {
    var body: some View {
        VStack {
            Text("Content")
        }
        // SwiftUI respects safe areas by default
    }
}

struct ContentView: View {
    var body: some View {
        VStack {
            Text("Content")
        }
        .ignoresSafeArea() // Content will be clipped under notch/Dynamic Island
    }
}

VStack {
    ScrollView { /* content */ }
    Button("Continue") { next() }
        .buttonStyle(.borderedProminent)
        .padding()
}

VStack {
    Button("Continue") { next() } // Top of screen — hard to reach one-handed
        .buttonStyle(.borderedProminent)
        .padding()
    ScrollView { /* content */ }
}

HStack(spacing: 12) {
    ForEach(items) { item in
        CardView(item: item)
            .frame(maxWidth: .infinity) // Adapts to screen width
    }
}

HStack(spacing: 12) {
    ForEach(items) { item in
        CardView(item: item)
            .frame(width: 180) // Breaks on SE, wastes space on Pro Max
    }
}

TabView {
    HomeView()
        .tabItem {
            Label("Home", systemImage: "house")
        }
    SearchView()
        .tabItem {
            Label("Search", systemImage: "magnifyingglass")
        }
    ProfileView()
        .tabItem {
            Label("Profile", systemImage: "person")
        }
}

// Hamburger menu hidden behind three lines — discoverability is near zero
NavigationView {
    Button(action: { showMenu.toggle() }) {
        Image(systemName: "line.horizontal.3")
    }
}

NavigationStack {
    List(items) { item in
        ItemRow(item: item)
    }
    .navigationTitle("Messages")
    .navigationBarTitleDisplayMode(.large)
}

.gesture(
    DragGesture()
        .onChanged { /* custom drawer */ } // Conflicts with system back swipe
)

NavigationStack(path: $path) {
    List(items) { item in
        NavigationLink(value: item) {
            ItemRow(item: item)
        }
    }
    .navigationDestination(for: Item.self) { item in
        ItemDetail(item: item)
    }
}

VStack(alignment: .leading, spacing: 4) {
    Text("Section Title")
        .font(.headline)
    Text("Body content that explains the section.")
        .font(.body)
    Text("Last updated 2 hours ago")
        .font(.caption)
        .foregroundStyle(.secondary)
}

VStack(alignment: .leading, spacing: 4) {
    Text("Section Title")
        .font(.system(size: 17, weight: .semibold)) // Won't scale with Dynamic Type
    Text("Body content")
        .font(.system(size: 15)) // Won't scale with Dynamic Type
}

HStack {
    Image(systemName: "star")
    Text("Favorites")
        .font(.body)
}
// At accessibility sizes, consider using ViewThatFits or
// AnyLayout to switch from HStack to VStack

@Environment(\.dynamicTypeSize) var dynamicTypeSize

var body: some View {
    if dynamicTypeSize.isAccessibilitySize {
        VStack { content }
    } else {
        HStack { content }
    }
}

extension Font {
    static func scaledCustom(size: CGFloat, relativeTo textStyle: Font.TextStyle) -> Font {
        .custom("CustomFont-Regular", size: size, relativeTo: textStyle)
    }
}

// Usage
Text("Hello")
    .font(.scaledCustom(size: 17, relativeTo: .body))

Text("Primary text")
    .foregroundStyle(.primary) // Adapts to light/dark

Text("Secondary info")
    .foregroundStyle(.secondary)

VStack { }
    .background(Color(.systemBackground)) // White in light, black in dark

Text("Primary text")
    .foregroundColor(.black) // Invisible on dark backgrounds

VStack { }
    .background(.white) // Blinding in Dark Mode

// In Assets.xcassets, define "BrandBlue" with:
// Any Appearance: #0066CC
// Dark Appearance: #4DA3FF

Text("Brand text")
    .foregroundStyle(Color("BrandBlue")) // Automatically switches

HStack {
    Image(systemName: "exclamationmark.triangle.fill")
        .foregroundStyle(.red)
    Text("Error: Invalid email address")
        .foregroundStyle(.red)
}

// Only color indicates the error — invisible to colorblind users
TextField("Email", text: $email)
    .border(isValid ? .green : .red)

@main
struct MyApp: App {
    var body: some Scene {
        WindowGroup {
            ContentView()
                .tint(.indigo) // All interactive elements use indigo
        }
    }
}

Button(action: addToCart) {
    Image(systemName: "cart.badge.plus")
}
.accessibilityLabel("Add to cart")

Button(action: addToCart) {
    Image(systemName: "cart.badge.plus")
}
// VoiceOver reads "cart.badge.plus" — meaningless to users

VStack {
    Text("Price: $29.99")
        .accessibilitySortPriority(1) // Read first
    Text("Product Name")
        .accessibilitySortPriority(2) // Read second
}

@Environment(\.accessibilityReduceMotion) var reduceMotion

var body: some View {
    CardView()
        .animation(reduceMotion ? nil : .spring(), value: isExpanded)
}

VStack(spacing: 16) {
    Button("Purchase") { buy() }
        .buttonStyle(.borderedProminent)

    Button("Add to Wishlist") { wishlist() }
        .buttonStyle(.bordered)

    Button("Delete", role: .destructive) { delete() }
}

.alert("Delete Photo?", isPresented: $showAlert) {
    Button("Delete", role: .destructive) { deletePhoto() }
    Button("Cancel", role: .cancel) { }
} message: {
    Text("This photo will be permanently removed.")
}

// Alert for non-critical info — should be a banner or toast
.alert("Tip", isPresented: $showTip) {
    Button("OK") { }
} message: {
    Text("Swipe left to delete items.")
}

.sheet(isPresented: $showCompose) {
    NavigationStack {
        ComposeView()
            .navigationTitle("New Message")
            .toolbar {
                ToolbarItem(placement: .cancellationAction) {
                    Button("Cancel") { showCompose = false }
                }
                ToolbarItem(placement: .confirmationAction) {
                    Button("Send") { send() }
                }
            }
    }
    .presentationDetents([.medium, .large])
}

List {
    Section("Recent") {
        ForEach(recentItems) { item in
            ItemRow(item: item)
                .swipeActions(edge: .trailing) {
                    Button(role: .destructive) { delete(item) } label: {
                        Label("Delete", systemImage: "trash")
                    }
                    Button { archive(item) } label: {
                        Label("Archive", systemImage: "archivebox")
                    }
                    .tint(.blue)
                }
        }
    }
}
.listStyle(.insetGrouped)

TabView {
    MessagesView()
        .tabItem {
            Label("Messages", systemImage: "message")
        }
        .badge(unreadCount)
}

NavigationStack {
    List(filteredItems) { item in
        ItemRow(item: item)
    }
    .searchable(text: $searchText, prompt: "Search items")
    .searchSuggestions {
        ForEach(suggestions) { suggestion in
            Text(suggestion.title)
                .searchCompletion(suggestion.title)
        }
    }
}

PhotoView(photo: photo)
    .contextMenu {
        Button { share(photo) } label: {
            Label("Share", systemImage: "square.and.arrow.up")
        }
        Button { favorite(photo) } label: {
            Label("Favorite", systemImage: "heart")
        }
        Button(role: .destructive) { delete(photo) } label: {
            Label("Delete", systemImage: "trash")
        }
    }

TabView {
    OnboardingPage(
        image: "wand.and.stars",
        title: "Smart Suggestions",
        subtitle: "Get personalized recommendations based on your preferences."
    )
    OnboardingPage(
        image: "bell.badge",
        title: "Stay Updated",
        subtitle: "Receive notifications for things that matter to you."
    )
    OnboardingPage(
        image: "checkmark.shield",
        title: "Private & Secure",
        subtitle: "Your data stays on your device."
    )
}
.tabViewStyle(.page)
.overlay(alignment: .topTrailing) {
    Button("Skip") { completeOnboarding() }
        .padding()
}

if isLoading {
    ForEach(0..<5) { _ in
        SkeletonRow() // Placeholder matching final row layout
            .redacted(reason: .placeholder)
    }
} else {
    ForEach(items) { item in
        ItemRow(item: item)
    }
}

if isLoading {
    ProgressView("Loading...") // Blocks the entire view
} else {
    List(items) { item in ItemRow(item: item) }
}

Button("Complete") {
    let generator = UINotificationFeedbackGenerator()
    generator.notificationOccurred(.success)
    completeTask()
}

Button("Take Photo") {
    // Request camera permission only when the user taps this button
    AVCaptureDevice.requestAccess(for: .video) { granted in
        if granted { showCamera = true }
    }
}

// In AppDelegate.didFinishLaunching — too early, no context
func application(_ application: UIApplication, didFinishLaunchingWithOptions ...) {
    AVCaptureDevice.requestAccess(for: .video) { _ in }
    CLLocationManager().requestWhenInUseAuthorization()
    UNUserNotificationCenter.current().requestAuthorization(options: [.alert]) { _, _ in }
}

struct LocationExplanation: View {
    var body: some View {
        VStack(spacing: 16) {
            Image(systemName: "location.fill")
                .font(.largeTitle)
            Text("Find Nearby Stores")
                .font(.headline)
            Text("We use your location to show stores within walking distance. Your location is never shared or stored.")
                .font(.body)
                .multilineTextAlignment(.center)
            Button("Enable Location") {
                locationManager.requestWhenInUseAuthorization()
            }
            .buttonStyle(.borderedProminent)
            Button("Not Now") { dismiss() }
                .foregroundStyle(.secondary)
        }
        .padding()
    }
}

LocationButton(.currentLocation) {
    fetchNearbyStores()
}
.labelStyle(.titleAndIcon)

struct MyAppShortcuts: AppShortcutsProvider {
    static var appShortcuts: [AppShortcut] {
        AppShortcut(
            intent: StartWorkoutIntent(),
            phrases: ["Start a workout in \(.applicationName)"],
            shortTitle: "Start Workout",
            systemImageName: "figure.run"
        )
    }
}

ShareLink(item: article.url) {
    Label("Share", systemImage: "square.and.arrow.up")
}

@Environment(\.scenePhase) var scenePhase

.onChange(of: scenePhase) { _, newPhase in
    switch newPhase {
    case .active: resumeActivity()
    case .inactive: pauseActivity()
    case .background: saveState()
    @unknown default: break
    }
}